Tongs



J. MUREN July 28, 1925 TONGS Filed Oct. 13, 1923 V 17d: 2; MarenATTORNEY WITNESSES UNITED STATES kane, lVashington,

. define pairs of ears Patented July 28, 1925.

PUFF-I6 E;

' JOHN MUBEN, OFFISYPOKANE, wasnincron.

Tones.-

Application filed ct ober 13,i1923. f Serial No. 668,403.

To all whom it may concern:

Be it known that I, JOHN MUREN, a citizen of, the United States,residing at Spoin the county of Spokane and State of have invented newand useful Improvements in Tongs, following is a specification.

=This invention relates to lifting devices, particularly to tongs itsobjectthe provision of a novel device designed for use in pulling pilesor similar work, the essential feature being the provision of a deviceof this character having a plurality of jaws so mounted, arranged andconnected with a pull pin that when a pull is exerted all of the jawswill be urged into gripping engagement with the article or object to bepulled, the arrangement being furthermore such that by grasping andpulling upon one jaw to effect opening, all of the jaws will becorrespondingly moved.

An important object is the provision of a device of this character whichwill be simple and inexpensive in manufacture, easy to operate anduse,positive in action, eflicient and durable in service and ageneralimprovement in the art.

With the above and other objects and advantages in view the inventionconsists in the details of construction to be herein after more fullydescribed and claimed and illustrated in the accompanying drawings, inwhich:

Figure 1 is a side elevation of the device,

Figure 2 is a longitudinal section,

Figure 3 is a cross section on the line 33 of Figure 2 and Figure 4 is adetail view of the pull pin.

Referring more particularly to the drawin s I have shown a head formedwith a bore 11 and having the lower end portion cut away at variousspaced points as indicated at 12 to Slidable through the bore 11 in thehead is a pull pin 14 equipped with any suitable attaching means, suchas that indicated at 15 whereby it may be connected with ahoisting cableor the like. The lower end of this pin is enlarged as shown at 16 toprevent it from being drawn up through the bore. At a point spaced aboveits lower end this pull pin is formed with intersecting slots 17 whichhave their upper and lower edges beveled as indicated at 18 and 19respectively.

of which the or hooks and has for the device as comprlsmg p'Inconjunction witlrthese' parts, I provide a'plurallty of jaws 20'whichare similar in construction and which may be of any desired size, lengthand shape and which may terminate in any suitable grab hooks 21whereby-they may be engaged. upon a pile or other object to be pulled orlifted. These aws are arranged between the pairs of ears 13 and arepivoted 'therebetween' by suitable pins or bolts 22. At their pivotedends these jaws are formed with elongated curved noses 23 which arereceived within the slots 17 and which are adapted to be engaged by thebeveled ends 18 and 19 of the slots when the pin 14 is moved in or out.

In use it will be seen that by grasping one of the jaws and pullingoutwardly upon it, the nose 23 thereof bearing against the lower beveledend 19 of one slot will pull the pin 14 downwardly so that all of thejaws will be automatically released. When the device is engaged. upon apile or other object to be pulled or lifted, it is apparent that when anupward pull is applied to the pull pin, the lower ends 19 of the slotsengaging against the undersides of the noses 23 will swing all of thejaws into gripping engagement with the pile or other object. Incase itis so desired, by applying pressure downwardly upon the pull pin, thebeveled ends 18 of the slots therein engaging the uppersides of thenoses 23 will swing all of the jaws outwardly into released position. I

From the foregoing description and a study of the drawings it will beapparent that I have thus provided a simply constructed, inexpensive andvery easily operated grab hook device which will 'efliciently erform allthe functions for which it is intended and which on account of thefewness of the parts should have a long and satisfactory life.

While I have shown and described the preferred embodiment of theinvention it is of course to be understood that I reserve the right tomake such changes in the form, construction and arrangement of parts aswill not depart from the spirit of the invention or the scope of thesubjoined claims.

Having thus described my invention I claim: j

1. A device of the character described comprising a head having a bore,a pull pin slidable longitudinally through the head and provided withintersecting slots having tudinally within the bore and formed withintersecting slots having both ends beveled, a plurality of jaws pivotedbetween said ears, and noses on the'pivoted ends of the jaws engagedwithin said slots and engageable by the beveled ends thereof forcontrolling the position of the jaws.

In testimony whereof I aflix my signature.

JOHN MUREN.

